I have a front runner slimline 2 rack and will be putting a clamshell RTT on the front part of it, I will have about 28” of space behind the tent that I would like to mount a cargo box (Roam/Pelican etc) and I can’t seem to find much info about if the mounting solutions they offer such as the roam case hard mounts or the pelican hard mounts allow for horizontal placement. All the pictures they show are the boxes mounted lengthwise along the vehicle. Does anyone have a setup like I’m describing and which cases (Preferably 85-105liters) are you able to hard mount?